CN204010258U - A kind of warning circuit that rains - Google Patents
A kind of warning circuit that rains Download PDFInfo
- Publication number
- CN204010258U CN204010258U CN201420428114.1U CN201420428114U CN204010258U CN 204010258 U CN204010258 U CN 204010258U CN 201420428114 U CN201420428114 U CN 201420428114U CN 204010258 U CN204010258 U CN 204010258U
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- China
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- transistor
- accumulator
- warning circuit
- resistance
- hummer
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Abstract
The utility model discloses a kind of warning circuit that rains, comprise voltage follower U1, the positive input of voltage follower U1 respectively with one end of resistance R 1, one end of thermistor RT is connected, the other end of thermistor RT is connected with the negative pole of power supply G, thermistor RT is immersed in transformer oil, the output terminal of voltage follower U1 respectively with the positive pole of light emitting diode D2, one end of resistance R 4 is connected, the base stage of the other end of resistance R 4 and transistor T 1, the collector of transistor T 1 is connected with the base stage of transistor T 2, the emitter of transistor T 2 is connected with one end of hummer S, the other end of hummer S is connected with the negative pole of power supply G.The oil temperature monitoring interference free performance that the utility model employing voltage follower replacement microprocessor carries out oil-filled transformer is high, and driving transistors conducting, carries out sound and light alarm, safe and reliable, has a good application prospect.
Description
Technical field
The utility model relates to a kind of warning circuit that rains, and belongs to daily living article.
Background technology
In summer, due to sunny, people can carry out the airing of quilt or clothing out of doors, still; often there will be thunder shower, when people are when indoor, the very difficult very first time is found when rainy; tidy up the article of airing, cause article to be drenched, cause unnecessary trouble.
Utility model content
The existing people of technical matters that the utility model solves when indoor, be difficult to the very first time when rainy, find, tidy up the article of airing, cause article to be drenched, cause the problem of unnecessary trouble.Rain alarm of the present utility model, adopt solar powered, energy-conserving and environment-protective, and can carry out immediately audible alarm when rainy, reminding user is tidied up the article of airing in time, circuit is simple, with low cost, easy to use, has a good application prospect.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of warning circuit that rains, it is characterized in that: comprise and be arranged on the humidity inductive plate S that the outer rain of window is costed, the output terminal of described humidity inductive plate S is connected with the input end of audio oscillator circuit by resistance R 1, the output terminal of described audio oscillator circuit is connected with hummer B, also comprise solar energy photovoltaic panel and accumulator, described solar energy photovoltaic panel is arranged on open air, its electric energy output end is connected with the electric energy input end of accumulator, the electric energy output end of described accumulator is connected with the electric energy input end of audio oscillator circuit by K switch, described audio oscillator circuit comprises transistor T 1, T2, the base stage of described transistor T 1 is connected with resistance R 1, the collector of described transistor T 1 is connected with the base stage of transistor T 2, the emitter of described transistor T 2 is connected with the positive input terminal of accumulator, the emitter of described transistor T 1 is connected with the negative input end of accumulator, the collector of described transistor T 2 is connected with one end of hummer B, the other end of described hummer B is connected with the negative input end of accumulator.
The aforesaid one warning circuit that rains, is characterized in that: described transistor T 1 is NPN triode, and described transistor T 2 is PNP triode.
The aforesaid one warning circuit that rains, is characterized in that: between the collector of described transistor T 2 and the base stage of transistor T 1, be also provided with feedback capacity C1.
The aforesaid one warning circuit that rains, is characterized in that: the output voltage of described accumulator is 12V.
The aforesaid one warning circuit that rains, is characterized in that: the emitter of described transistor T 2 is also connected to the ground and is connect by the second capacitor C 2.
The aforesaid one warning circuit that rains, is characterized in that: between the emitter of described transistor T 2 and K switch, be provided with current-limiting resistance R2.
The beneficial effects of the utility model are: rain alarm of the present utility model, adopt solar powered, energy-conserving and environment-protective, and can when rainy, carry out immediately audible alarm, and reminding user is tidied up the article of airing in time, and circuit is simple, with low cost, easy to use, have a good application prospect.
Brief description of the drawings
Fig. 1 is the circuit diagram of rainy warning circuit of the present utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, a kind of warning circuit that rains, comprise and be arranged on the humidity inductive plate S that the outer rain of window is costed, the output terminal of humidity inductive plate S is connected with the input end of audio oscillator circuit by resistance R 1, the output terminal of audio oscillator circuit is connected with hummer B, also comprise solar energy photovoltaic panel and accumulator, solar energy photovoltaic panel is arranged on open air, its electric energy output end is connected with the electric energy input end of accumulator, the output voltage of accumulator is 12V, enough provide working power to drive hummer B work to audio oscillator circuit, energy-conserving and environment-protective, the electric energy output end of accumulator is connected with the electric energy input end of audio oscillator circuit by K switch, audio oscillator circuit comprises transistor T 1, T2, the base stage of transistor T 1 is connected with resistance R 1, the collector of transistor T 1 is connected with the base stage of transistor T 2, the emitter of transistor T 2 is connected with the positive input terminal of accumulator, the emitter of transistor T 1 is connected with the negative input end of accumulator, the collector of transistor T 2 is connected with one end of hummer B, the other end of hummer B is connected with the negative input end of accumulator.
Described transistor T 1 is NPN triode, and described transistor T 2 is PNP triode; Between the base stage of the collector of transistor T 2 and transistor T 1, be also provided with feedback capacity C1, the emitter of transistor T 2 is also connected to the ground and is connect by the second capacitor C 2, is provided with current-limiting resistance R2 between the emitter of transistor T 2 and K switch.
The course of work of the present utility model is, rainwater dropped on humidity inductive plate S when upper, and hummer B can send chimes of doom, drove with two transistors, and feed back by feedback capacity C1, in the time that humidity inductive plate S is dry, transistor T 1 is not worked, and when humidity inductive plate, S runs into after rainwater, two transistors form audio oscillator circuit, drive hummer B to report to the police, humidity inductive plate S sensitivity is relevant with the resistance of resistance R 1, adjustable.
In sum, rain alarm of the present utility model, adopt solar powered, energy-conserving and environment-protective, and can when rainy, carry out immediately audible alarm, and reminding user is tidied up the article of airing in time, and circuit is simple, with low cost, easy to use, have a good application prospect.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. a rainy warning circuit, it is characterized in that: comprise and be arranged on the humidity inductive plate S that the outer rain of window is costed, the output terminal of described humidity inductive plate S is connected with the input end of audio oscillator circuit by resistance R 1, the output terminal of described audio oscillator circuit is connected with hummer B, also comprise solar energy photovoltaic panel and accumulator, described solar energy photovoltaic panel is arranged on open air, its electric energy output end is connected with the electric energy input end of accumulator, the electric energy output end of described accumulator is connected with the electric energy input end of audio oscillator circuit by K switch, described audio oscillator circuit comprises transistor T 1, T2, the base stage of described transistor T 1 is connected with resistance R 1, the collector of described transistor T 1 is connected with the base stage of transistor T 2, the emitter of described transistor T 2 is connected with the positive input terminal of accumulator, the emitter of described transistor T 1 is connected with the negative input end of accumulator, the collector of described transistor T 2 is connected with one end of hummer B, the other end of described hummer B is connected with the negative input end of accumulator.
2. the rainy warning circuit of one according to claim 1, is characterized in that: described transistor T 1 is NPN triode, and described transistor T 2 is PNP triode.
3. the rainy warning circuit of one according to claim 1, is characterized in that: between the collector of described transistor T 2 and the base stage of transistor T 1, be also provided with feedback capacity C1.
4. the rainy warning circuit of one according to claim 1, is characterized in that: the output voltage of described accumulator is 12V.
5. the rainy warning circuit of one according to claim 1, is characterized in that: the emitter of described transistor T 2 is also connected to the ground and is connect by the second capacitor C 2.
6. the rainy warning circuit of one according to claim 1, is characterized in that: between the emitter of described transistor T 2 and K switch, be provided with current-limiting resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428114.1U CN204010258U (en) | 2014-07-31 | 2014-07-31 | A kind of warning circuit that rains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428114.1U CN204010258U (en) | 2014-07-31 | 2014-07-31 | A kind of warning circuit that rains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204010258U true CN204010258U (en) | 2014-12-10 |
Family
ID=52050226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420428114.1U Expired - Fee Related CN204010258U (en) | 2014-07-31 | 2014-07-31 | A kind of warning circuit that rains |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204010258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240456A (en) * | 2014-07-31 | 2014-12-24 | 苏州华徕光电仪器有限公司 | Rain warning circuit |
-
2014
- 2014-07-31 CN CN201420428114.1U patent/CN204010258U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240456A (en) * | 2014-07-31 | 2014-12-24 | 苏州华徕光电仪器有限公司 | Rain warning circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |